webusb

问题 I'd like to use WebUSB to read and write files to a flash drive, or better, write arbitrary bits like unix's dd . Is this possible, or is only serial-like communication supported? 回答1: It cannot. USB mass storage devices are claimed by the system's generic USB mass storage class driver and are therefore unavailable to the browser. 来源： https://stackoverflow.com/questions/49162692/can-webusb-transfer-files-to-a-usb-mass-storage-device-or-act-like-dd

问题 We recently upgraded our Windows 10 test environment with ChromeDriver v87.0.4280.20 and Chrome v87.0.4280.66 (Official Build) (64-bit) and after the up-gradation even the minimal program is producing this ERROR log: [9848:10684:1201/013233.169:ERROR:device_event_log_impl.cc(211)] [01:32:33.170] USB: usb_device_handle_win.cc:1020 Failed to read descriptor from node connection: A device attached to the system is not functioning. (0x1F) Minimum Code Block: from selenium import webdriver options

问题 We recently upgraded our Windows 10 test environment with ChromeDriver v87.0.4280.20 and Chrome v87.0.4280.66 (Official Build) (64-bit) and after the up-gradation even the minimal program is producing this ERROR log: [9848:10684:1201/013233.169:ERROR:device_event_log_impl.cc(211)] [01:32:33.170] USB: usb_device_handle_win.cc:1020 Failed to read descriptor from node connection: A device attached to the system is not functioning. (0x1F) Minimum Code Block: from selenium import webdriver options

问题 We recently upgraded our Windows 10 test environment with ChromeDriver v87.0.4280.20 and Chrome v87.0.4280.66 (Official Build) (64-bit) and after the up-gradation even the minimal program is producing this ERROR log: [9848:10684:1201/013233.169:ERROR:device_event_log_impl.cc(211)] [01:32:33.170] USB: usb_device_handle_win.cc:1020 Failed to read descriptor from node connection: A device attached to the system is not functioning. (0x1F) Minimum Code Block: from selenium import webdriver options

问题 We recently upgraded our Windows 10 test environment with ChromeDriver v87.0.4280.20 and Chrome v87.0.4280.66 (Official Build) (64-bit) and after the up-gradation even the minimal program is producing this ERROR log: [9848:10684:1201/013233.169:ERROR:device_event_log_impl.cc(211)] [01:32:33.170] USB: usb_device_handle_win.cc:1020 Failed to read descriptor from node connection: A device attached to the system is not functioning. (0x1F) Minimum Code Block: from selenium import webdriver options

问题 We recently upgraded our Windows 10 test environment with ChromeDriver v87.0.4280.20 and Chrome v87.0.4280.66 (Official Build) (64-bit) and after the up-gradation even the minimal program is producing this ERROR log: [9848:10684:1201/013233.169:ERROR:device_event_log_impl.cc(211)] [01:32:33.170] USB: usb_device_handle_win.cc:1020 Failed to read descriptor from node connection: A device attached to the system is not functioning. (0x1F) Minimum Code Block: from selenium import webdriver options

问题 UPDATED CODE I'm using this code to claim the use of the serial-2-USB device. It shows up and I can query the info about it, ie. "connected to USB2.0-Serial VID: 6790 PID: 29987" (CH34x from Qinheng). To be clear, I use the winUSB driver (downloaded with zadig-2.5.exe, Windows 10) and have uninstalled the original drivers. I get the received data as dataview but when I do the decode it comes out gibberish. And I see that the array length pretty much corresponds to what I know my ESP8266 is

问题 UPDATED CODE I'm using this code to claim the use of the serial-2-USB device. It shows up and I can query the info about it, ie. "connected to USB2.0-Serial VID: 6790 PID: 29987" (CH34x from Qinheng). To be clear, I use the winUSB driver (downloaded with zadig-2.5.exe, Windows 10) and have uninstalled the original drivers. I get the received data as dataview but when I do the decode it comes out gibberish. And I see that the array length pretty much corresponds to what I know my ESP8266 is

问题 UPDATED CODE I'm using this code to claim the use of the serial-2-USB device. It shows up and I can query the info about it, ie. "connected to USB2.0-Serial VID: 6790 PID: 29987" (CH34x from Qinheng). To be clear, I use the winUSB driver (downloaded with zadig-2.5.exe, Windows 10) and have uninstalled the original drivers. I get the received data as dataview but when I do the decode it comes out gibberish. And I see that the array length pretty much corresponds to what I know my ESP8266 is

来源： https://stackoverflow.com/questions/51605886/webusb-getting-serial-data-pl2303